brew.sh: use HOMEBREW_GIT instead of git
brew.sh: use HOMEBREW_GIT instead of git

MikeMcQuaid/brew,Homebrew/brew,vitorgalvao/brew,claui/brew,JCount/brew,vitorgalvao/brew,sjackman/homebrew,MikeMcQuaid/brew,mahori/brew,nandub/brew,sjackman/homebrew,konqui/brew,reitermarkus/brew,reitermarkus/brew,claui/brew,konqui/brew,nandub/brew,konqui/brew,vitorgalvao/brew,EricFromCanada/brew,MikeMcQuaid/brew,Homebrew/brew,claui/brew,konqui/brew,EricFromCanada/brew,claui/brew,JCount/brew,Homebrew/brew,sjackman/homebrew,reitermarkus/brew,MikeMcQuaid/brew,Homebrew/brew,nandub/brew,mahori/brew,nandub/brew,sjackman/homebrew,EricFromCanada/brew,mahori/brew,EricFromCanada/brew,reitermarkus/brew,JCount/brew,mahori/brew,vitorgalvao/brew,JCount/brew